Koh-I-Noor Rapidograph Pen and Ink Set, 7 Assorted Pen Nibs and .75 oz. Bottle of Ultradraw Black Ink, 1 Set Each (3165SP7P) Pens handle like a pencil, moving in all directions without snagging or digging into the drawing surface Versatile technical pen for engraver's perfection, loose sketching style or a finely detailed pointillist technique Color-coded nibs sizes included: .25mm, .30mm, .35mm, .50mm, .60mm, .80mm and 1.20mm Included bottle of Koh-I-Noor Ultradraw Black Ink is a versatile, waterproof drawing ink with slow drying for long open pen time Made in USA